How are mthfr mutations and chiari malformation related? Should I get tested if I have chiari? (and high B6 levels, for no good reason)

Forgive my frankness. One lab is promoting testing for mthfr mutations despite the fact that they merely identify folks who may be at slightly extra risk for this-and-that and who need to be extra-sure they get enough nutrients. A majority of people carry at least one 'mutant mghfr' and this is generating all kinds of scares. No relatioship to your chiari.